Synthesis of Photo-Switchable Derivatives of p-tert-Butyl Thiacalix[4]arenes Containing Ethoxycarbonyl and 4-Amidoazobenzene Fragments in the Lower Rim Substituents

Alena A. Vavilova, Roman V. Nosov, Luidmila S. Yakimova, Igor S. Antipin, Ivan I. Stoikov
2013 Macroheterocycles  
New p-tert-butyl thiacalix [4] arene derivatives containing simultaneously the 4-amidoazobenzene and ethoxycarbonyl fragments at the lower rim in cone and 1,3-alternate conformation of tri-and tetrasubstituted derivatives, correspondingly, were synthesized. It was shown that the replacement of the hydroxyl group by ethoxycarbonyl fragment in a 1,3-disubstituted macrocycle with 4-amidoazobenzene groups leads to the binding of fluoride-and chloride-anions. The substitution of two hydroxyl groups
more » ... y ethoxycarbonyl fragments dramatically changed the binding properties of tetrasubstituted p-tert-butyl thiacalix[4]arene derivative.
doi:10.6060/mhc130748s fatcat:w2znga2mevcszhh3rhuctwbmhu